1 files changed, 61 insertions, 0 deletions
diff --git a/drivers/dma/sh/shdma.h b/drivers/dma/sh/shdma.h
new file mode 100644
index 000000000..9c121a4b3
--- /dev/null
+++ b/drivers/dma/sh/shdma.h
@@ -0,0 +1,61 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Renesas SuperH DMA Engine support
+ *
+ * Copyright (C) 2009 Nobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com>
+ * Copyright (C) 2009 Renesas Solutions, Inc. All rights reserved.
+ *
+ */
+#ifndef __DMA_SHDMA_H
+#define __DMA_SHDMA_H
+
+#include <linux/sh_dma.h>
+#include <linux/shdma-base.h>
+#include <linux/dmaengine.h>
+#include <linux/interrupt.h>
+#include <linux/list.h>
+
+#define SH_DMAE_MAX_CHANNELS 20
+#define SH_DMAE_TCR_MAX 0x00FFFFFF	/* 16MB */
+
+struct device;
+
+struct sh_dmae_chan {
+	struct shdma_chan shdma_chan;
+	const struct sh_dmae_slave_config *config; /* Slave DMA configuration */
+	int xmit_shift;			/* log_2(bytes_per_xfer) */
+	void __iomem *base;
+	char dev_id[16];		/* unique name per DMAC of channel */
+	int pm_error;
+	dma_addr_t slave_addr;
+};
+
+struct sh_dmae_device {
+	struct shdma_dev shdma_dev;
+	struct sh_dmae_chan *chan[SH_DMAE_MAX_CHANNELS];
+	const struct sh_dmae_pdata *pdata;
+	struct list_head node;
+	void __iomem *chan_reg;
+	void __iomem *dmars;
+	unsigned int chcr_offset;
+	u32 chcr_ie_bit;
+};
+
+struct sh_dmae_regs {
+	u32 sar; /* SAR / source address */
+	u32 dar; /* DAR / destination address */
+	u32 tcr; /* TCR / transfer count */
+};
+
+struct sh_dmae_desc {
+	struct sh_dmae_regs hw;
+	struct shdma_desc shdma_desc;
+};
+
+#define to_sh_chan(chan) container_of(chan, struct sh_dmae_chan, shdma_chan)
+#define to_sh_desc(lh) container_of(lh, struct sh_desc, node)
+#define tx_to_sh_desc(tx) container_of(tx, struct sh_desc, async_tx)
+#define to_sh_dev(chan) container_of(chan->shdma_chan.dma_chan.device,\
+				     struct sh_dmae_device, shdma_dev.dma_dev)
+
+#endif	/* __DMA_SHDMA_H */